Admittedly in the car industry the skill advantage in the UK means that we've not seen significant ill effects (also worth remembering Jaguar went to Ford before Tata so we replaced one with another) but certainly in a lot of other sectors foreign ownership has simply led to outsourcing production over time which has made me skeptical. If the UK is ever to regain industrial supremecy (below China/US at least) then we won't catch Germany by allowing greater German ownership.